Ventilator



0. H. REICH.

VENTILATOR.

APPLICATION FILED Aus.4. I920.

Patented Dec. 14, 1920.

Otto /'Z Be/bh PATENT OFFICE.

OTTO I-I. REICH, OF SPOKANE, WASHINGTON.

VENTILATOR.

Application filed August 4, 1920.

T 0 all whom it may concern:

Be it known that I, Orro H. REIOH, a citi- Z611 of the United States, residing at Spokane, in Spokane county and State of Tashington, have invented'certain new and useful Improvements, in Ventilators, of which the following is a specification.

My present invention relates to improvements in ventilators designed for domestic and other uses, and utilizing a wind driven suction fan, for drawing air currents from rooms or other spaces. The primary object of my invention is the provision of an efficient device of this character that is comparatively simple in construction and inexpensive of manufacture, and although compactly arranged is readily accessible for repairs and readjustments of parts.

The invention consists in certain novel combinations and arrangements of parts of the combined suction fan and wind wheel with the housing and ventilating features as will be hereinafter more fully set forth. In the accompanying drawings I have illustrated one complete example of the physical embodiment of my invention constructed and arranged according to the best mode I have thus far devised for the practical application of the principles of my invention.

igure 1 is a vertical sectional view of a ventilator embodying my invention.

Fig. 2 is a top plan view.

Fig. 3 is a transverse sectional view at line 3-3 of Fig. 1.

In the preferred form of the invention illustrated in the drawings I have depicted the structure usually adapted for domestic use for drawing vitiated air from a room, or other place, through the ventilating or draft pipe 1. It will be understood that the ventilating or draft pipe may lead to other compartments or spaces, and when the device of my invention is applied as in Fig. 1, the action of the wind driven ventilator will dispose of the air or gases therefrom, in the usual manner.

Above the draft pipe is located an enlarged fan chamber 2, whose Walls may be of sheet metal, and is cylindrical in cross section, the housing or walls of the chamber forming an inclosed space of much greater diameter than the pipe 1. A conical top 3, also of metal, is provided for the fan chamher, the base of the conical top conforming to the diameter of the fan chamber, but an annular flange 4 on the conical top projects Specification of Letters Patent.

Patented Dec. 14:, 1920.

Serial No. 401,224.

beyond the periphery of the housing 2 or the chamber walls in order to divert water of rainfall from the fan chamber and direct it downwardly along the outside of the fan chamber. The elevated roof or conical top of the fan chamber thus forms a shield against ingress of water to the fan chamber.

At its upper end the fan chamber is provided with a series of ports or openings 5 around its periphery that are bounded by the upright braces 6, preferably integral with the walls 2 of the fan chamber, and upon these braces or arms 6 are supported the four branches of the cruciform, horizontally disposed brace or spider 7, with its extremities 8 extended beyond the periphery of the fan chamber. At 9 the arms 6 are provided with flanges that are perforated for securing bolts 10, and in Fig. 1 it will be observed that these bolts pass through the flange 4 on the conical top, through the spider 7, and through the flanges 9 of the arms, to rigidly hold these parts and form a stable structure supported from the fan chamber 2.

Outside the cowl formed by the housing 2 and its conical top, a wind guard or shield 11 is affixed, consisting of a metallic ring incasing the slotted or ported upper portion of the fan chamber, and spaced a sufficient distance outside the ported chamber walls to permit air currents to ascend through the ports and upwardly within the windshield, and at the same time prevent ingress of wind currents to the chamber and to divert them from the cowl at this point. The windshield or ring is attached to the bent ends of the spider extremities 8 by bolts or screws 12, and the ring, is not only supported on the spider, but the former adds rigidity to the structure of the cowl to enable it to withstand wind currents directed thereagainst.

The previously described elements form a rigid and stable structure or cowl for supporting the exterior wind driven wheel 13 and the suction fan 14, 14: on the vertical spindle r shaft 15. The wind wheel 13 as illustrated is of a single piece forming two blades, and the suction fan is preferably made up of two members 14 and 14k, duplicates in structure and preferably stamped of sheet metal, having converging upper arms 1 1 that rise from the body of the blades 14 14 and are perforated for the reception of the shaft 15. The spaced portions of the fan blades are attached on the shaft, at the lower end by means of fixed collars 16, 16, and at the upper end or top of the fan by a fixed collar 17, in order that the fan may revolve with the shaft.

The wind wheel is secured to the shaft by means of rivets or bolts 18 passed through the shaft, which is slotted to receive the integral blades, and these rivets also pass through blades at their central part, as seen in Figs. 1 and 2.

At the central portion of the spider 7 a pair of journal sleeves 19 and 20 are provided, the former above and the latter below the spider, to afford an adequate'and ample journal bearing for the shaft 15, and preferably ball bearings are inclosed within these sleeves to facilitate the movement of the shaft. The sleeves are provided with flanges 21 corresponding to the arms of the spider, and bolts or screws 22 are passed through the spider arms and flanges on the sleeves to firmly anchor the sleeves on the spider.

The wind wheel and suction fan are thus axially alined on the shaft as a rigid structure and the shaft is provided with a comparatively long central bearing which supports it in upright position and in which the shaft is stabilized.

It will be noted that the wind wheel is of much smaller diameter and capacity than the suction fan inclosed in its housing, and because of this proportion of parts the large fan is revolved at a comparatively slow speed from the wind wheel to draw the currents through the pipe 1 and impel them through the openings or ports 5 and thence upwardly within the Wind shield or ring 11. The wind wheel serves as a weather-vane and veers with the change in directions of the wind, to continuously revolve under the action of wind currents and operate the fan within the cowl. The interior of the fan housing and the ventilating pipe are protected from rainfall by the conical top and side shield or ring 11, and the operating parts of the device are thus protected from inclement weather, and against entrance of dust and other extraneous matters, rendering them more durable and efficient.

Having thus fully described my invention, what I claim is 1. The combination with the slotted housing forming a fan chamber with supporting arms, of a spider frame, a conical top having an annular flange, and bolts passed through said flange and spider frame and secured to said arms, of a pair of bearing sleeves rigidly secured to said spider frame, a shaft supported in said sleeves, a wind wheel fixed on the shaft above the conical top and a larger suction fan fixed on said shaft within the housing, and a shield surrounding said slotted housing.

2. The combination with a housing having upper open ports and fashioned with upright, flanged, supporting arms, of a spider frame attached to said flanged arms and provided with extremities projecting beyond said arms, an annular shield attached at the ends of said extremities and surrounding the upper portion of said housing, a pair of bearing sleeves fixed to the center of said spider and a shaft journaled therein, a suction fan on the lower end of said shaft within the housing and a wind wheel at the upper end of said shaft, and a conical top to said housing having an annular flange projecting beyond the housing. V

In testimony whereof I afiix my signature.

OTTO H. REIOH. 

